This just happens man, wait couple of days,no thing you do will work, i know i had almost same problem a year ago..
Only thing you can try, send ip as pm to Gimli or Gandalf to unban ip, but saying again it wont help..
I guess its a "brake" in line between you and server, so until people who are in charge fix it, you cant do anything
Problem is not server related, server restarts wont do anything for you.